Which half quantity is appropriate for m efficiency exhaust muffler?

I heard there are 2 totally different half numbers from this thread,
the distinction being the size to accommodate the additional size created by the
m diffuser. https://www.2addicts.com/boards/present….php?t=1645696

And I discovered 3 totally different half numbers on-line and I am unsure which is which. 18302286673 $1175.63https://www.ecstuning.com/b-genuine-…r/18302286673/

18302354340 $1355.77https://www.ecstuning.com/b-genuine-…t/18302354340/

18302293766 $1,165.99https://www.bimmerworld.com/Exhaust/…302293766.html

What I’ve proper now, half quantity 7 602 290.Which is the proper one? I’ve the usual diffuser.

And all of them are valved, proper? How loud are they in consolation mode? Do not need to wake anybody up within the morning.